#include <STC15F2K60S2.H>

void system_int ()
{
    P0 = 0XFF;
    P2 = P2 &0X1F |0X80;
	P2 &= 0X1F;
	
	P0 = 0X00;
    P2 = P2 &0X1F |0XA0;
	P2 &= 0X1F;
    
}
